<template>
  <el-container class="home-container">
    <el-header>
      <div>
        <img src="../assets/heima.png"
             alt="">
        <span>博客系统管理后台</span>
      </div>
      <el-button type='info'
                 @click="logout">退出</el-button>
    </el-header>
    <el-container>
      <el-aside :width="isCollapse?'64px': '200px'">
        <!-- 收起功能 -->
        <div class="toggle-button"
             @click="toggleClick">|||</div>
        <!-- 侧边栏Menu -->
        <el-menu background-color="#333744" text-color="#fff" active-text-color="#409eff" unique-opened router
                 :collapse="isCollapse"
                 :collapse-transition="false"
                 :default-active="activePath">
          <el-submenu v-for="item in menuList" :index="item.id+''" :key="item.id">
            <!-- 一级目录 -->
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <span>{{item.authName}}</span>
            </template>
            <!-- 二级目录 -->
            <el-menu-item v-for="subitem in item.children" :index="'/'+ subitem.path" :key="subitem.id" @click="saveNavState('/'+subitem.path)">
              <template slot="title">
                <i class="el-icon-location"></i>
                <span>{{subitem.authName}}</span>
              </template></el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧内容区域 -->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data () {
    return {
      menuList: [],
      iconsObj: {
        125: 'iconfont icon-user',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      isCollapse: false,
      activePath: ''
    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList () {
      // 发送请求获取左侧菜单数据
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)

      this.menuList = res.data
      console.log(res)
    },
    toggleClick () {
      this.isCollapse = !this.isCollapse
    },
    saveNavState (path) {
      window.sessionStorage.setItem('activePath', path)
      this.activePath = path
    }
  }
}
</script>

<style lang="less" scope>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 20px;
    }
  }
}
.el-aside {
  background-color: #333744;
  border-right: none;
}
.el-main {
  background-color: #eaedf1;
}
.toggle-button {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
}
</style>
